package com.timerecording.util;

import afu.org.checkerframework.checker.oigj.qual.O;
import io.jsonwebtoken.Jwt;
import io.jsonwebtoken.JwtBuilder;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * @author smz41
 * @description: TODO
 * @date 2025/7/20
 */
public class JwtUtils {
    public static final String  jwtToken = "123456Mszlu!@#$$";
    public static String  createToken(Long userId){
        Map<String,Object> claims = new HashMap<>();
        claims.put("userId",userId);
        JwtBuilder jwtBuilder = Jwts.builder()
                .signWith(SignatureAlgorithm.HS256,jwtToken)  //签发算法  秘钥为jwtToken
                .setClaims(claims) //body数据  要唯一  自行设置
                .setIssuedAt(new Date())  //设置签发时间
                .setExpiration(new Date(System.currentTimeMillis() + 24*60*60*60*1000));  //一天的有效时间
        String token = jwtBuilder.compact();
        return token;
    }

    public static Map<String, Object> checkToken(String token){
        try {
            Jwt parse = Jwts.parser().setSigningKey(jwtToken).parse(token);  //解析jwtToken
            return (Map<String,Object>) parse.getBody();

        }catch(Exception e){
            e.printStackTrace();
        }
        return null;

    }

}
